Question

Can you trace the sequence of events which occur when a bright light is focussed on your eyes?

Answer 1

When bright light is focused on our eyes , the photoreceptors generate electric impulses and send it to the spinal cord via the sensory neurons. The spinal cord inteprets the message and send its response to the muscles of the eyelids to close via the motor neurons. And therefore our eyelids close when bright light is focused on our eyes.

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Answer 2

At 1st receptor cell received this then it is pass through on the secondary neuron..then the massege goose to the brain...brain pass back to motor neuron which contracts the pupil..